Results 161 to 170 of about 16,235 (210)

The Effect of Sudden Depressurization on Pilots at Cruising Altitude

2012
The standard flight level for commercial airliners is ∼12 km (40 kft; air pressure: ∼ 200 hPa), the maximum certification altitude of modern airliners may be as high as 43-45 kft. Loss of structural integrity of an airplane may result in sudden depressurization of the cabin potentially leading to hypoxia with loss of consciousness of the pilots ...
Muehlemann, Thomas, Holper, Lisa, Wenzel, Juergen, Wittkowski, Martin, Wolf, Martin   +4 more
openaire   +3 more sources

Experimental Study of Dust Behavior during Depressurization

Journal of Nuclear Science and Technology, 1992
A small amount of graphite dust is present in the primary cooling system of a graphite, moderated gas-cooled reactor during normal operation and condensable fission products may be absorbed on the dust. Since it is possible that the fission products are released with dust under the accident conditions such as depressurization events, they have a ...
Kazuhiro SAWA, Takeshi NISHIMOTO, Yoshiaki MIYAMOTO   +2 more
openaire   +1 more source

Depressurization Amorphization of Single-Crystal Boron Carbide

Physical Review Letters, 2009
We report depressurization amorphization of single-crystal boron carbide (B4C) investigated by in situ high-pressure Raman spectroscopy. It was found that localized amorphization of B4C takes place during unloading from high pressures, and nonhydrostatic stresses play a critical role in the high-pressure phase transition.
X Q, Yan, Z, Tang, L, Zhang, J J, Guo, C Q, Jin, Y, Zhang, T, Goto, J W, McCauley, M W, Chen   +8 more
openaire   +2 more sources

Sediment–well interaction during depressurization

Acta Geotechnica, 2016
Depressurization gives rise to complex sediment–well interactions that may cause the failure of wells. The situation is aggravated when high depressurization is imposed on sediments subjected to an initially low effective stress, such as in gas production from hydrate accumulations in marine sediments.
Hosung Shin, J. Carlos Santamarina
openaire   +2 more sources

Impact of depressurizing rate on the porosity of aerogels

Microporous and Mesoporous Materials, 2012
Abstract The effects of supercritical drying of diluted resorcinol–formaldehyde (RF) gels in CO 2 and in acetone are compared. We show that, for both processes, depressurizing rate of the autoclave after drying has a significant influence on the resultant shrinkage, and hence on resultant bulk density, surface area and pore volumes.
G. Amaral-Labat, A. Szczurek, V. Fierro, E. Masson, A. Pizzi, A. Celzard   +5 more
openaire   +1 more source

Venting During Satellite System Depressurization

26th International Communications Satellite Systems Conference (ICSSC), 2008
Multilayer Insulation (MLI) blankets consist of closely spaced aluminum coated shields that are spaced apart to reduce heat transfer between the satellite system and the environment, particularly in vacuum. In space application, satellite systems and sub-systems are wrapped in MLI blankets to isolate them thermally from the environment and achieve ...
Mehmet Öztokatli, Kemal Sari
openaire   +1 more source

Depressurization to Mitigate Direct Containment Heating

Nuclear Technology, 1989
This paper reports the capability to depressurize a three-loop pressurized water reactor during a station blackout sequence assessed using the SCDAP/RELAP5 computer code. During the initial calculations, failure of the pressurizer surge line from creep rupture was predicted prior to relocation of molten core material to the lower plenum.
Rosanna Chambers, Duane J. Hanson, R. Jack Dallman, Fuat Odar   +3 more
openaire   +1 more source

Introducing a Depressurization Step in Online LCxSFC Modulation

Analytical Chemistry
New online LCxSFC valve technologies have recently been developed, based on the transfer of the first-dimension eluent either in the CO2 stream or in the cosolvent stream of the SFC dimension. While using the appropriate valve configuration greatly improved peak shapes, the reduction of the analysis time remained a challenge.
Margaux Sanchez, Julien Crepier, Karine Faure   +2 more
openaire   +2 more sources

Research on Depressurization Strategy of AP1000 Automatic Depressurization System Under DVI Pipeline Break Accident

Volume 9: Advanced Methods of Manufacturing for Nuclear Reactors and Components; Severe Accidents and Mitigation Strategies for Beyond Design Basis Events
Abstract In this paper, based on the system analysis program, the AP1000 nuclear power plant is taken as the research object, and the AP1000 system analysis model is built. Taking the DVI pipeline break accident as the starting event, the depressurization strategy of the ADS is studied.
Dufeng Lv, Zhengrun Shang, Zhaoming Meng, Zhongning Sun   +3 more
openaire   +1 more source

Effects of Depressurization Upon Largemouth Bass

North American Journal of Fisheries Management, 1983
Abstract The effects of induced, rapid depressurization upon largemouth bass (Micropterus salmoides), simulating conditions common to deep-water angling, were examined. Depths of 0.0, 9.1, 18.3, and 27.4 m were simulated in a large hyperbaric chamber. Statistical analyses indicated that significant mortality occurred when fish were depressurized from ...
Mark G. Feathers, Anthony E. Knable
openaire   +1 more source